Percussion-fuse with an adjustable retardation device.



I-I. PRAHL. PERCUSSION FUSE WITH AN ADJUSTABLE RETARDATION DEVIQE.

APPLICATION FILED FEB-17.1915.

Patented June 22, 1915.

2 SHEETS-SHEET I.

. A r e 1% I! 4 S E S 5 E N n w H. PRAHL. PERCUSSION FUSE WITH AN ADJUSTABLE RETARDATION DEVICE.

APPLICATION TILED FEB. l7| I9I 5.

Km 1 Q TIL 2 2 6 n H o a 6 LIV n 8 LL 3 P 2 SHEETS-SHEET WITNESSES I SGHE METALIE 'PERCUSSIUBFZUfiE All? ADJUQTAEBLE ECETAELBDATIGN DIEVKCE.

rrtoirtoal gone 72% 1915.

T aZ/Iauhomia may. cone-em Be i; known who; I, HUGO PRAT'SL.) onginooi; a subject of :tlie Emperor, residing T3 Uordmgorsimsso, Dusseldorf, Germany. have invented certain new, and useful Improvements in "Peroussionwl usos with an rrilji mblo Retardation Eovico; and I (lo-hereby declare the following to be a fiIIL-olmr. and. exact. description of the. inrorotioo,v '5 .ms. "ill orizililo others sliillred. in the .art is wlll ll apperiziius to and use the some.

M3 invention relates lo .2; porcussion fuse with an Zliljllfillkbl! i'etartlation device in. which the primer bolt is-rolonsod by rotution of an arm connected i'ghore' vii 1.

My invontion consists in that on the lanpaot of the shell a. lock piece protrudes and tensioning a spring prevenis the. Pfil$- ing arm from being rotated umil. spring has retracted the loci: piece. By odjuaiing the spring it is easily possible. to wary on; will the rotarzlaiion of the ignition on imaco In the acoompanying di'mvi' s I shown two embodiments of my lim'on-tioin.

Figure. l is a. longil-udiinol section mod Fig. 2 a cross seoiion of :1- combined and pen omission fuse in W'lllCl'l the. percussion device is provided with an arrangement according to my invention. Fig. 3 is a plan View and Fig. i a cross section of slide provided the roiaraiatlou (levies out of Fig. is a longitudinal section 3 a cross section of percussion use con truoten 21cc inning to my invention. gs. Z'--l() l'EllfiSWl: (let-ail, wows of sins construction.

in lilo fuse shown UV ligsz. :4 l?

\Tl ill an inclined surmoo d against oorro spomlingly inrlinecl pi'ojvct -21 of the fuse frame. in oonsoqueme of this .wrnngeiiwnt the primer bolt is adapted when unlocked to turn under the im'iuemro of the inclined mics prr-s ul togvthor, and by 511ml] rotation the rose of the bolt (Fig. 2) is brought undo: ilm pro i ;ti n (I whereupon the primer bolt {1 Willi its primer is thrown against the needle 6.

in its normal position the primer bolt {7 is prevent-ad from being turned by the fol lowing arming: out. ()n lire primer bolt a rock arm 1 L2 l'i-wlloneri and provided with a small Llmiblfi firmed level-l pivotally mount scion Eff i38 roolz arm 2 one arm of the said double rmieil lover .obuiting against a flat taoealp-ortion of a bolt fond the other arm abutting against abolt 0. The bolt 5, is com reeled in any well l iown inannor with a me fusing onylmown monstrosonin such manner, thzfi the llatienecl portion j is iurnecl away from the leror Z .somwtimo of'tor fli'iillg' tho said time being arljustoil in any .orriin ry Way by the ti .i n lovioo. 13.55 soon as fiaitemsd pcm lion-sf film boll: j roloases the liflall lever Z he rooli 11 i is: to he turmoil 3:} the spring '0 awiiiae inclined s irifirces of zigmfi a so alm. .lioprimor bolt 5] i3 film-own against lilo neeillo 2 in ho aforesairl manner. If the, hell is to l e oxplocloii by impact the bolt; 0 ronmmlesjrr i moment of impact whereby'i-lio iibulotin arm of the lever l is freed so ilm lire rook lovor i is ogoiri rotated undo/r i1 moo of the spring 7) and the incliriod so cos. The primer is then ilirown b the spring go against the noeclle. Aoooriliug 6o my invention. the ignition on im mof. can be. retarded by means of She following arrangomont. Behind the arm ia-nd within *oho iuso body (Z a bolt n is arranged Whiolrls hold. back in its position of rest by a spring 1 (m impact is boltu protrudes boyoml the edge of the arm 2' in 5-inch a. ma. ne-r lllRtlZl-N'. sii-irl arm i in spite of being re' leizoml by tho loolt'o cannot yet rotate lie ou-iioo i; iii temporarily looliwl by the bolt 11, as shown by soon how-ovo as tho retardation of tho shell prodruzorl by the impact senses the pl which was teiisioi'iocl lay {he prolrmiing of i6 ool o rejects that bola and from the a so bloat-now ii lzilvs laoo.

out 0? operation the doon Clarice :r slide j provided (Figs. 2 and 3) is movable i within the frame of the fuse. ll. is ovidono that the bolt u can protrude and retard the ignition only if the by u. spring f (Fig. 2) against the inner sur- E b m 01 the primer bolt face of the timing cap 0, providediwith a recess 7:, the cap is so adjusted that the recess L tclres the position 1 shown by dotted in l! 2 the spring f presses the slides h outwardly and brings a non recessed port of the slide into the way of the bolt c, In stead the recess is the inner surface of the cap a, may be provided with a protection it" which ii turned iiit'o the Way of the slide it moves ing the bolt u from protruding on impac 'lhe outer end of the slide it and the recess 1 and eventually the projection are pro vidcd with inclined edges so that they can. each other, if the timing cap a is to be adjusted into another postion.

The percussion fuse shown by Figs.- 5&6 is provided with a device securing the during transport and Within the gun barrel the said device consisting of a body y of powder which. is ignited under the .im pulse firing by the primer This body s; powder 1) His sway after the shell has moved through a certain distance after tiring and if the body 3/ is burnt completely bursting charge can be moved forward 1m the influence of its spring a Well. known mzmncr. The primer bolt 9 is my der the influence of a spring 31 pressing it with an inclined surface dagsinst a fixed inclined projection 0 arranged on a fixed in as shown by Fig. 5. The primer bolt is provided with or recessed disk 2' similar in action to the released arm i of the construe tioii shown by Figs. 1- If this disk like l-w l al is free to rock the primer bolt is released and the ignition takes place.

in the position of rest the arm 2' is tilted from. reciting by a bolt 0? held in its cities before firing and some time after he powder body 3 and free to protrude c powder y has been burnt completely. :now the shell strikes against a target the cit 0 protrudcscnd thereby releases the disk like arm a" which then can rock so that t we needle e; For retarding the igi e bolt o is provided which 011 ill protrudes into the hole :0 of the arm 6- :c-revents this arm i from looking in c tsbeing freed by the bolt 0 By he bolt u tensions a spring 9 after the impact rejects the bolt o y the arm 6- is finally released.

let to lo :1 device e slide h sis movable within such a, manner that it iis slide inwardly thus also prevent- :ing out of operation the redescribed my invention What in percussion fuse the combination of primer bolt, an arm connected therewith, 11 ii locking this arm and for unlocking it 1 er the impact of the shell, means orran #3 so as protrude on impact for locking arm and a spring tensioned l), pro action.

on use the combination s disldike arm connected Y; for locking this arm and for onloc t after the impact of the shell, mean arranged so as to protrude on impact for locking; said arm and a spring tensiooed by this protruding action.

ercussion' fuse the combination I fission use the combination our bol an arm connected therei cking this arm and for un tar the inmost of the shell, means r l so as to protrude on impact for lo 11;; said infill, a spring? tensioned by this protruding action and adjustable slide for preenting the protruding means from operation in a permission fuse the combination bolt, on erm connected there rocking this arm and for un- I I the impact or the shell,

to protrude on im- V I sed. in i a spring tensioceo. till action and a slide ustziblc by Loans a timing cap for orerenting the raiding; means from opera.- tion.

In testimony specihcsti i' scribiii lOClil it means pact ror i have signed this rice of two subr bolt, an arm connected there- 

